Window-fastener



1. w; MCMAHoN. WINDOW FASTENER. l FILED DEC l5 PPLI 917. l ,8 1 4,488. Patented Aug. 26, 1919.

M9 cfiZar'zwLye JOHN W. MUMAHON, 0F WIN THROP, MASSACHUSETTS.

WIND OW-FASTEN ER.

Application led December 15, 1917.

To all whom t may concern:

Be it known that I, JOHN W. MoMaHoN, a citizen of the United States of America, and resident of l/Vinthrop, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Window-Fasteners, of which the following is a specification.

This invention relates to a window fastener and more particularly to a device for lockingthe lower window sash of a double Window in position relatively to the upper sash.

Heretofore it has been proposed to secure a window in` position by means mounted on the window sash and adapted to be moved into locking engagement with cooperating means disposed on some other part of the window or on the window frame. For example, it has Ibeen proposed to provide locking mechanism on the top of the lower sash of the window, the mechanism being adapted to interlock with the upper sash so as to lock the lower sash either in lowermost position or in partially raised position. These devices however have not been adapted satisfactorily to lock the Window in position in such a manner that it cannot be forced up and at the same time permit a quick and convenient manipulation of the locking means. Certain forms of the prlor devices have been relatively substantial so as to lock the window permanently, as for example during the summer when a house is closed, but these forms have been relatively inconvenient to manipulate. On the other hand certain forms have been fairly convenient to manipulate but they have not been satisfactorily substantial and reliable safely to lock a window during the owners absence from home over a long period.

The principal objects of the present invention therefore are to overcome the above difliculties and to provide means for locking a window in position which may be readily operated to lock and unlock the window, which will permanently secure the window in locked position, and which may be moved out of operative position when not in use so that it will not project from the plane of the window nor interfere with the raising of the window.

Other objects of the invention will be Specification of Letters Patent.

Patel'lted-Aug. Serial No. 207,222.

apparent from the following description and accompanying drawings in Which,-

Figure 1 is a perspective view of the preferred embodiment of my invention showing its application to an ordinary double sash window; and

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1, parts being shown in elevation.

The particular embodiment of the` invention chosen for the purposes of illus-` tration is adapted to of the lower sash of a double-sash window such as illustrated at L,

trated` at U. The preferred form of the device comprises a vertical post 1 extending upwardly from the lower sash along the upper sash. Upon the post 1 is mounted a plurality of locking devices one of the devices being adapted to be quickly and easily moved into and out of position for the purpose of temporarily locking the lower window relatively to the upper window. This means preferably comprises a pin 2 slidably mounted in an opening in the post 1 and adapted to extend into openings 3, 4 and 5 in the sash of the upper window, the openings 3, 4 and 5 being disposed in the same vertical plane as the openlng for pm 2 in post 1 when the post is in the normal position shown in the drawings. The other of the locking means is intended and adapted permanently and rigidly to lock the two windows together and it preferably comprises a bolt 6 passing through an opening in the post 1 and adapted to be threaded into a threaded socket 7 disposed in the upper sash U in alinement with the opening in the post 1 when the two window sashes are in normal position as illustrated in the drawings.

By virtue of the fact that the post 1 extends a considerable distance upwardly from the lower sash ample space is afforded for the two locking means above described, the two locking means being permitted to be disposed one above the other by virtue of the elongate nature of the post. However, a post of the character described when projecting upwardly from the lower sash would prevent the lower window being raised into uppermost position inasmuch as be mounted on the top and to cooperate with the upper sash of the window illus-v the post would engage the'top of the window frame. l therefore provide means for moving the post into such position that when not in use it may be so shifted from normal position as window being raised substantially as far as if no locking means were provided. v The preferred means Jfor accomplishing this end locking means is comprises a hingeB pivotally connecting the post to the top of the lower sash. Thus, my` improved fastener not only affords a doubly `convenient and secure lock by virtue of the temporary sliding fastener and the permanent interlocking fastener, but it also permits the device to be folded into such position as not to interfere with the comlete raising of the window.

Another advantage of my permanent that it will draw the up per and lower sashes tightly together.l Thus, when the windows are closed the sashes may be drawn tightly together thereby to prevent air passing between the sashes. For the purposes of more tightly closing the space between the two sashes to permit the lower when the permanent locking means is in operation, I offset the upper and lower cross members of the lower and upper sashes, respectively, as indicated at 9.

Whatlclainiis A'device for locking the upper and lower sashes of a dou'ble window against relative movement comprising a post projecting from the top of the .lower sash alongthe upper sash, means Jfor detachably securing the post to thei'upper sash, a hinge secured to thelower sash and to the side of said post to permit the post to swing downwardly along the upper edge of the lower sashV in the plane of the lower sash, and a bolt extending thro-ugh said post and threading into said upper sash, whereby said sashes are ldrawn tightly together when said bolt is threaded into the upper sash and said post does not project inwardly' from the lower sash when swung downwardly.

Signed by me at Boston, Mass., this eighteenth day of October, 1917.

JOHN WV. MCMAHON.

Copies of this patent may be obtained for five cents each, by addressing the Commissionenof Patents, Washington, D. C. 

